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T400 Ozone Analyzer Operator’s Manual Setup Menu
99
5.4.1.5. RNGE MODE AUTO: Auto Range Mode Configuration
AUTO range mode gives the analyzer to ability to output data via a LOW range
(displayed on the front panel as RANGE1) and HIGH range (displayed on the front
panel as RANGE2) on a single analog output.
When the AUTO range mode is selected, the analyzer automatically switches back and
forth between user selected LOW & HIGH ranges depending on the level of the O
3
concentration.
The unit will move from LOW range to HIGH range when the O
3
concentration
exceeds to 98% of the LOW range span limit.
The unit will return from HIGH range back to LOW range once the O
3
concentration
falls below 75% of the LOW range span limit.
To set the ranges press following button stroke sequence:
SETUP X.X PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE EXIT
SAMPLE RANGE=500.0 PPB O3= XXXX
<TST TST> CAL SETUP
SETUP X.X RANGE MODE MENU
MODE SET UNIT EXIT
SETUP X.X RANGE MODE:AUTO
SNGL DUAL AUTO ENTR EXIT
SETUP X.X RANGE MODE:SNGL
SNGL DUAL AUTO ENTR EXIT
SETUP X.X RANGE MODE MENU
MODE SET UNIT EXIT
SETUP X.X HIGH RANGE:200.0 Conc
00200.0ENTREXIT
Toggle buttons to
select the upper
SPAN limit for the
reporting range
EXIT discards the new
setting
ENTR accepts the
new setting
SETUP X.X LOW RANGE:50.0 Conc
00050.0ENTREXIT
The LOW and HIGH
ranges have separate
slopes and offsets for
computing the O
3
concentration.
The two ranges must
be independently
calibrated
.
EXIT discards the
new setting
ENTR accepts the
new setting
Note
Do not set the LOW range (RANGE1) of the instrument with a higher span limit
than the HIGH range (RANGE2). This will cause the unit to stay in the low reporting
range perpetually and defeat the function of the AUTO range mode.
06870C DCN6332